Parkinson's disease effects millions of people worldwide and includes symptoms like tremors, slow movement, and muscle stiffness. But though the disease is often difficult to detect, a group of researchers are optimistic about the success of developing a test, based on people's voice.

Parkinson's disease effects millions of people worldwide and includes symptoms like tremors, slow movement, and muscle stiffness. But though the disease is often difficult to detect, a group of researchers are optimistic about the success of developing a test, based on people's voice.